I'm looking for a little dipper or high quality shelving/notch filter to attenuate room resonances. Does anyone have a circuit diagram for a Urei 565 "Little dipper" or similar high quality notch filter. I could possibly trade diagrams from an Amek BCII if these are of use. Many thanks.
Urei Little Dipper
- Thread starter choppa
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Jakob E.
Jakob E.
jensenmann
Well-known member
best way to control room resonances are helmholtz resonators.
Jens
Jens
BYacey
Well-known member
Ashly made a notch filter, a customer brought the unit in thinking it wasn't working. When I bench tested it, it passed signal but didn't have any audible change on the signal when swept. I discovered that the Q on this thing was so high you could sweep through the notch so quickly without realizing it.
I might have a schematic someplace for this.
I might have a schematic someplace for this.
jensenmann
Well-known member
btw: welcome to the lab!
I´m sure there´s a lot of interest for your BCII schems :green:
:sam:
Here´s some intersting reading about controlroom acoustic:
http://www.ethanwiner.com/acoustics.html
http://www.jimmyether.com/tips/tips.php?id=13
http://www.bobhodas.com/publications.html
My opinion is to use controlroom EQing only for frequency correction, not for the correction of acoustical (time/phase-based) problems.
only my 0.02$
Jens
I´m sure there´s a lot of interest for your BCII schems :green:
:sam:
Here´s some intersting reading about controlroom acoustic:
http://www.ethanwiner.com/acoustics.html
http://www.jimmyether.com/tips/tips.php?id=13
http://www.bobhodas.com/publications.html
My opinion is to use controlroom EQing only for frequency correction, not for the correction of acoustical (time/phase-based) problems.
only my 0.02$
Jens
